Ralph9430 wrote:
Is your iPhone on and awake? The Apple Watch will not require the passcode if to you unlock your iPhone.
To clarify: this can apply, but only if you have enabled that setting (on your iPhone, in the Watch app: My Watch > Passcode - Unlock with iPhone).
With Passcode turned on, Unlock with iPhone enabled and Wrist Detection enabled: after putting it on your wrist, your watch will unlock after whatever you do first - either unlocking manually (with the passcode) or unlocking your iPhone. As described previously, it will then remain unlocked until the watch is removed from your wrist (or locked manually).